Examples with GenericUDFLeadLag org.apache.hadoop.hive.ql.udf.generic.GenericUDFLeadLag used on opensource projects

Example 1 with GenericUDFLeadLag

use of org.apache.hadoop.hive.ql.udf.generic.GenericUDFLeadLag in project hive by apache.

the class PTFTranslator method initExprNodeEvaluator.

private ObjectInspector initExprNodeEvaluator(ExprNodeEvaluator exprEval, ExprNodeDesc exprNode, ShapeDetails inpShape) throws HiveException {
    ObjectInspector outOI;
    outOI = exprEval.initialize(inpShape.getOI());
    /*
     * if there are any LeadLag functions in this Expression Tree: - setup a
     * duplicate Evaluator for the 1st arg of the LLFuncDesc - initialize it
     * using the InputInfo provided for this Expr tree - set the duplicate
     * evaluator on the LLUDF instance.
     */
    List<ExprNodeGenericFuncDesc> llFuncExprs = llInfo.getLLFuncExprsInTopExpr(exprNode);
    if (llFuncExprs != null) {
        for (ExprNodeGenericFuncDesc llFuncExpr : llFuncExprs) {
            ExprNodeDesc firstArg = llFuncExpr.getChildren().get(0);
            ExprNodeEvaluator dupExprEval = WindowingExprNodeEvaluatorFactory.get(llInfo, firstArg);
            dupExprEval.initialize(inpShape.getOI());
            GenericUDFLeadLag llFn = (GenericUDFLeadLag) llFuncExpr.getGenericUDF();
            llFn.setExprEvaluator(dupExprEval);
        }
    }
    return outOI;
}

Example 2 with GenericUDFLeadLag

use of org.apache.hadoop.hive.ql.udf.generic.GenericUDFLeadLag in project hive by apache.

the class PTFDeserializer method initExprNodeEvaluator.

private ObjectInspector initExprNodeEvaluator(ExprNodeEvaluator exprEval, ExprNodeDesc exprNode, ShapeDetails inpShape) throws HiveException {
    ObjectInspector outOI;
    outOI = exprEval.initialize(inpShape.getOI());
    /*
     * if there are any LeadLag functions in this Expression Tree: - setup a
     * duplicate Evaluator for the 1st arg of the LLFuncDesc - initialize it
     * using the InputInfo provided for this Expr tree - set the duplicate
     * evaluator on the LLUDF instance.
     */
    List<ExprNodeGenericFuncDesc> llFuncExprs = llInfo.getLLFuncExprsInTopExpr(exprNode);
    if (llFuncExprs != null) {
        for (ExprNodeGenericFuncDesc llFuncExpr : llFuncExprs) {
            ExprNodeDesc firstArg = llFuncExpr.getChildren().get(0);
            ExprNodeEvaluator dupExprEval = WindowingExprNodeEvaluatorFactory.get(llInfo, firstArg);
            dupExprEval.initialize(inpShape.getOI());
            GenericUDFLeadLag llFn = (GenericUDFLeadLag) llFuncExpr.getGenericUDF();
            llFn.setExprEvaluator(dupExprEval);
        }
    }
    return outOI;
}

Example 3 with GenericUDFLeadLag

use of org.apache.hadoop.hive.ql.udf.generic.GenericUDFLeadLag in project hive by apache.

the class PTFOperator method connectLeadLagFunctionsToPartition.

public static void connectLeadLagFunctionsToPartition(LeadLagInfo leadLagInfo, PTFPartitionIterator<Object> pItr) throws HiveException {
    if (leadLagInfo == null || leadLagInfo.getLeadLagExprs() == null) {
        return;
    }
    for (ExprNodeGenericFuncDesc llFnDesc : leadLagInfo.getLeadLagExprs()) {
        GenericUDFLeadLag llFn = (GenericUDFLeadLag) llFnDesc.getGenericUDF();
        llFn.setpItr(pItr);
    }
}